Gate-valve.



No. 847,932. f PATENTED MAR. 19, 1907.

' J. H. GAY.

GATE VALVE.

APPLICATION FILED JAN. 25, 1906.

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witness I Q g m,

BIO-847,932. PATENTED 1MIAR.19' 19071v J. H. GAY.

GATE VALVE.

APPLICATION FILED umzs, 190s.

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' GATE-VALVE.

Specification of Letters Patent.

atented March. 19, 1907.

Application filed January 25, 1906. Serial No. 297,918-

To all whom it may concern/.-

Be it known that I, JOHN H. GAY, a citizen of the United States,residing at Argyle, in the county of Clinch, State of Georgia, haveinvented certain new and useful Improvements in Gate-Valves and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention has relation to gate-valves generally, and in particularhas respect to tail-gates for turpentine stills or retorts.

It is the object of the invention to provide a gate-valve for use asspecified which may be operated with safety to the still-hand using itand not only without any strain upon the still or retort of such anature as to endanger its integrity or impair its usefulness, but whichmay be employed with entire safety, ease, and effectiveness, relievingthe retort and its connections of all needless strain, and absolutelyavoiding the difficulties, perplexities, loss of time, and dangersheretofore attendant upon this class of means employed in the artofdistilling turpentine.

Other objects of the invention embrace such improvements as enhance theefliciency of the device, its durability, and the entire readiness withwhich it may be employed.

The nature of the invention is herein shown and described as embodied ina tailgate that has a slidable connection with the still to open andclose the discharge-port, and is adapted to be operated by means of alever and connecting-link, and has a secondary lever operative inconnection with an incline or cam on the gate to compress the latterclose to the gate against the gate has been closed.

The accompanying drawings form a part of this specification and are tobe referred to as such, in Which Figure 1 is a front view showing thegate as fully closed. Fig. 2 is a similar view showing the gate as fullyopened. Fig 3 is a central sectional View taken through the incline orcam on the gate, the lever acting thereon and the yoke against which thelever operates to bind the gate against its faceplate or the surfaceagainst which it acts. Fig. 4 is a rear view of what is shown in Fig. 1.

Like letters of reference designate like parts or features, as the casemay be, wherever they occur.

the face-plate after In the drawings, a designates the face of the partsurrounding the port 1), against which the gate operates. Anythingcontained in the still may be discharged through the said port, the mostimportant substance being the rosin which remains after the spirits havebeen distilled over and the wood reduced. Heretofore for the purpose ofeffecting the said discharge of rosin a gate consisting of a platecovering the port and maintained in place by a screw having its freeefiicient end acting against it has generally been employed. The screwhas been tapped through a yoke connected with fixed parts which has beenprovided with a hand-wheel or similar means on its outer end by whichthe screw has been turned against the gate to close it tight or operatedin the opposite direction to open it. These acts were attended with thedangers, difficulties, and harmful strains upon the pipe connectionshereinbeforc mentioned and which attacked the integrity of the retort.

Proceeding further with a description of my improvements, 0 designatesthe gate pivoted, as at d, to one side of the port I), and pivotallyconnected at an opposite point through the medium of a link 6 with alever f, whereby the gate may be raised to open the port, as indicatedin Fig. 2, or lowered to close said port, as shown in Fig. 1, by theraising and lowering of the said lever.

A yoke or brace-bar g, suitably connected at its ends with fixed partsof the discharge pipe or retort, extends across the port b and serves asa bearing against which the tightening-lever operates, as will presentlyappear. On the outside of the gate a is an inclined piece or cam it,against which the tighteninglever i operates when it is lowered afterthe gate is closed to press the latter against its ace, the leverbearing at its opposite side against the yoke or brace-bar g, all as hasbeen hereinbefore indicated. The pivotal point of the lever i may be thesame as that of the gate or otherwise, as may be most expedient.

When it is desired to open the gate, the lever 11 will first be raisedto release the gate, and then by raising the lever f the gate will beraised and the discharge-port opened. To close the gate, the operationsjust recited will be reversed in order.

The construction and mode of operation of the parts are extremelysimple, while the results are attended with obviating the dangers,difficulties, mischiefs, and losses attaching to the old form of things.

The outer face of the discharge-pipe or part surrounding thedischarge-port will of course be milled or trued off, so that the gatecan operate thereagainst in a proper manner, as described.

It is scarcely necessary to add that the inl combination with thedischarge-pipe having l l l a trued outer surface surrounding thedischarge-port in the same, of a pivoted gatc' arranged to be movedagainst the said sur face to open and close the said port, a lever andlink connected with the said gate to move the same, an incline cam onthe face of the gate, a lever to act against the said cam, and a yoke orbrace against which the latter lever may operate in opposition to thecam.

In testimony whereof I alhx my signature in presence of two witnesses.

JOHN H. GAY.

Witnesses W. J. PATTERSON, B. A. HARPER.

